Overview

overview

10

Static

static

3

aedba59391...e5.exe

windows7-x64

10

aedba59391...e5.exe

windows10-2004-x64

10

Sharing

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General

  • Target

    06b9f586d1cb01906c18ee290e5f3247cef2380e51628f31e9eff9078b8e2201

  • Size

    160KB

  • Sample

    240417-qksglshb34

  • MD5

    1affe56af61fb7e56cd8450ac3622387

  • SHA1

    35a0d4637092c94a4ec43d80961f9b363f92cd8e

  • SHA256

    06b9f586d1cb01906c18ee290e5f3247cef2380e51628f31e9eff9078b8e2201

  • SHA512

    4d4148e0d5ebcd32dd251d2b1f3861134a52996a5f6921a41ee451465fb48edb228a36b7b5b26cbdbff45d5d975950a10fdc8e544aac8f0915f6136e4608e353

  • SSDEEP

    3072:IoghE1FTxJZC61yjNGV1cgo455eARX+8JRm0ZSrc4RI0h:niE1zn16I64rTXDJUyGI0h

Score
10/10
tofseeevasionpersistencetrojan

Malware Config

Extracted

Family

tofsee

C2

vanaheim.cn

jotunheim.name

Targets

    • Target

      aedba5939122af54e928bc355fbd3ffce10cc95f8d7efd007b8f9960d3c0cfe5.exe

    • Size

      256KB

    • MD5

      11d6fdab8ce0a4462699d12d8cc6e181

    • SHA1

      f79dd773636fb0c46346f08e9a36bea666e34350

    • SHA256

      aedba5939122af54e928bc355fbd3ffce10cc95f8d7efd007b8f9960d3c0cfe5

    • SHA512

      dd582a962bc9d3c50782a528a1c635d065530b96f7e1325d0c254f299b10b29218a8626b15f18b11aaf234b7393cea39d8025fa8d023fa9e79bdbdce2d6478a6

    • SSDEEP

      3072:DlrJL/wyRvNQG+FiOf5hqBNDo0Rpv01b8FbuW5hL4WeNH601:D3L/wUkFiOf5Ybon1gL4WeNa

    Score
    10/10
    tofseeevasionpersistencetrojan

    • Tofsee

      Backdoor/botnet which carries out malicious activities based on commands from a C2 server.

      trojantofsee

    • Windows security bypass

      evasiontrojan

    • Creates new service(s)

      persistence

    • Modifies Windows Firewall

      evasion

    • Sets service image path in registry

      persistence

    • Checks computer location settings

      Looks up country code configured in the registry, likely geofence.

    • Deletes itself

    • Executes dropped EXE

    • Drops file in System32 directory

    • Suspicious use of SetThreadContext

    behavioral1behavioral2

MITRE ATT&CK Matrix ATT&CK v13

Initial Access

Execution

Persistence

Create or Modify System Process

2
T1543

Windows Service

2
T1543.003

Boot or Logon Autostart Execution

1
T1547

Registry Run Keys / Startup Folder

1
T1547.001

Privilege Escalation

Create or Modify System Process

2
T1543

Windows Service

2
T1543.003

Boot or Logon Autostart Execution

1
T1547

Registry Run Keys / Startup Folder

1
T1547.001

Defense Evasion

Impair Defenses

2
T1562

Disable or Modify Tools

1
T1562.001

Disable or Modify System Firewall

1
T1562.004

Modify Registry

2
T1112

Credential Access

Discovery

Query Registry

1
T1012

System Information Discovery

2
T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Resource Development

Reconnaissance

Tasks